What is a plastic spool?
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Is the shape of the plastic used to wrap the wire, is the shape of the word “work”, which is wrapped in the middle of this “worker” word, is the word “Wang”. This is the spool.
What are the materials of plastic?
1. Injection molding: It is a melt in which the screw or plunger of the syringe is used, which is formulated by the melt in the cylinder, through the injection machine nozzle, the casting system, injecting cavity.
2. Blow: It is placed in the mold in the mold, which is placed on the mold in the mold, and is cooled to the cavity wall by means of compressed air blown. This method is mainly used for molding hollow plastic parts. By gas pressure, the heat shield in the mold is blown into a hollow article or a tube type
A method of blank without mold blowing into a pipe film. This method is mainly used in the manufacture of various packaging containers and tubular membranes.
All melt indexes are 0.04 to 1.12, which are more excellent hollow blow molding materials such as polyethylene, polyvinyl chloride, polypropylene, polystyrene, thermoplastic polyester, polycarbonate, polyamide, cellulose, and polycarbophil acetate. Acetal resin, etc., is used in most applications of polyethylene.
3. Rolling (rotation): A molding method similar to rotary casting is different, and the material thereof is not liquid, but a sintered dry powder. The process is to put the powder into the mold and rotate it around the two mutually perpendicular axes, heat and uniformly in the inner wall of the mold into one.
The body, and then cooled to obtain hollow articles from the mold.
The use of polyethylene, modified polystyrene, polyamide, polycarbonate, and cellulose plastics.